CN120006814A

CN120006814A - An intelligent secondary water supply drinking water equipment

Info

Publication number: CN120006814A
Application number: CN202510489398.8A
Authority: CN
Inventors: 池学聪; 范晶璟; 柳汉莹
Original assignee: Shanghai Lingang Water Supply And Drainage Development Co ltd; Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Lingang Water Supply And Drainage Development Co ltd; Shanghai Panda Machinery Group Co Ltd
Priority date: 2025-04-18
Filing date: 2025-04-18
Publication date: 2025-05-16
Anticipated expiration: 2045-04-18
Also published as: CN120006814B

Abstract

The application relates to the technical field of secondary water supply drinking equipment, in particular to intelligent secondary water supply drinking equipment which comprises a vibrating pipeline, a W-shaped filtering membrane group, a backwashing device and related components. The vibrating pipeline adopts a spiral outer wall and a corrugated inner wall design and is matched with a sudden expansion and sudden contraction cavity to optimize the water flow characteristic, the W-shaped filtering membrane group realizes the high-efficiency filtering and self-cleaning functions through a resonance transmission structure, and the back flushing device is combined with the ejector and the ozone generator to finish deep cleaning and disinfection. The application achieves the effect of reducing the maintenance times of the tank body or the water collecting and filtering system and reducing the shutdown phenomenon of the water supply equipment.

Description

Intelligent secondary water supply drinking device

Technical Field

The application relates to the technical field of water treatment, in particular to intelligent secondary water supply drinking equipment.

Background

The secondary water supply equipment is a system for secondary storage, pressurization and transportation of water when the municipal water supply pressure is insufficient (such as a high-rise building). The device generally comprises a water tank, a filtering membrane group, a water pump, an electric control system and the like, and has the remarkable advantages of no need of building a water tower, small investment, small occupied area, flexible organization and rapid construction and production. The equipment adopts automatic dispatching, automatic operation and energy saving of water vapor, can be automatically networked with a tap water network, can still maintain water supply even under the condition of power failure, and does not need special people to watch after debugging.

In the related art, patent publication No. CN217325627U discloses tank-type equipment for secondary water supply, which comprises a tank body, a control cabinet, an ozone disinfection system and a water collecting and filtering system, wherein the tank body is provided with a tank body outlet and a tank body inlet, the water collecting and filtering system comprises a water collecting pipe arranged in the tank body, the water collecting pipe is provided with a tubular membrane separation device and an ultraviolet disinfection device, the tubular membrane separation device is used for filtering particles and bacteria in water, the water collecting pipe outlet is communicated with the tank body outlet, the ozone disinfection system comprises an ozone generator and a tail gas treatment device which are respectively connected with the control cabinet, the ozone generator and the tail gas treatment device are respectively communicated with the tank body, ozone is generated and conveyed into the tank body, and the tail gas treatment device is used for discharging redundant gas in the tank body to the atmosphere. The utility model can effectively solve the problem of water quality pollution in secondary water supply.

Aiming at the related technology, the principle is that municipal water is input into a tank body, the municipal water is filtered by a water collecting and filtering system in the tank body to be output to a user side, the problem of the method is that untreated municipal water is stored in the tank body, so that more impurities in the tank body are caused, the tank body or the water collecting and filtering system needs to be cleaned regularly or irregularly, the maintenance cost is increased, and the tank body or the water collecting and filtering system needs to be stopped when being cleaned, so that the water stopping phenomenon is caused.

Disclosure of Invention

In order to reduce the maintenance times of a tank body or a water collecting and filtering system and reduce the shutdown phenomenon of water supply equipment, the application provides intelligent secondary water supply drinking equipment.

The application provides intelligent secondary water supply drinking equipment. The following technical scheme is adopted:

an intelligent secondary water supply drinking device, comprising:

A water purifying tank;

The vibrating pipeline is arranged in the water purifying tank, the water inlet end of the vibrating pipeline is connected with the municipal pipeline, the vibrating pipeline mainly comprises a spiral outer wall and a corrugated inner wall, the vibrating pipeline extends in the water purifying tank and the water outlet end of the vibrating pipeline extends out of the water purifying tank,

The input pipeline is connected with the water outlet end of the vibration pipeline;

The W-shaped filtering membrane group comprises a plate-shaped filtering body, and a membrane group water inlet side and a concentrated water outlet side which are respectively arranged on two sides of the plate-shaped filtering body, wherein the plate surface of the plate-shaped filtering body is provided with a purified water outlet side, the water outlet end of the input pipeline is connected with the membrane group water inlet side, and the W-shaped filtering membrane group is arranged on the outer wall of the vibrating pipeline;

the first sewage drain pipe is connected with the concentrated water outlet side;

And the back flushing device is connected with the water purifying tank and the first sewage draining pipeline and is used for reversely introducing purified water into the W-shaped filtering membrane group and the vibrating pipeline so as to clean the W-shaped filtering membrane group and the vibrating pipeline.

Through the technical scheme, the combined structure of the spiral outer wall and the corrugated inner wall can generate high-frequency vibration when water flows through before the municipal water enters the W-shaped filtering membrane group, large particle clusters in the water are scattered into fine particles, the water flows enter the filtering module and are in a uniform dispersion state, the effective filtering area utilization rate is improved, and accordingly the stripping efficiency of impurities on the surface of the filtering membrane is improved. In addition, the filtered purified water is stored in the purified water tank, so that the cleaning times of the purified water tank can be effectively reduced, and the shutdown phenomenon of the water supply equipment is reduced.

Optionally, the vibration pipeline is provided with sudden expansion and contraction cavities at intervals of a preset distance, and the diameter sudden expansion ratio of the vibration pipeline is 1:1.5.

By adopting the technical scheme, the sudden expansion and sudden contraction cavity forms vortex disturbance locally through the flow passage mutation design with the diameter sudden expansion ratio of 1:1.5, so that the water flow shearing force is further enhanced, the falling off of impurities attached to the inner wall of the pipeline is promoted, the self-cleaning of the pipeline is realized, and meanwhile, the natural frequency of the vibrating pipeline can be amplified by the periodic sudden expansion and sudden contraction structure, the vibration energy transmission efficiency is enhanced, and the integral anti-blocking capability is improved.

Optionally, the membrane group water inlet side is connected with the water inlet flow distribution plate, the water inlet end of water inlet flow distribution plate with the water outlet end intercommunication of input pipeline, the dense water outlet side is connected with out the water flow distribution plate, the water outlet end of water outlet flow distribution plate with the water inlet end intercommunication of first blow off pipeline, be provided with resonance transmission structure between water inlet flow distribution plate and the water outlet flow distribution plate respectively and the vibration pipeline.

Through the technical scheme, the water inlet splitter plate and the water outlet splitter plate are coupled with the vibration pipeline through the resonance transmission structure, vibration energy is transmitted to the splitter plate, water flow on the water inlet side is uniformly distributed to the W-shaped filtering membrane group, local overload of the membrane surface is avoided, meanwhile, the resonance effect enhances the fluid mobility on the concentrated water side, concentration polarization phenomenon is reduced, and membrane filtering efficiency is improved.

Optionally, the resonance transmission structure includes staple bolt and spring steel sheet frame, the staple bolt with vibrating tube connects, spring steel sheet frame respectively with staple bolt and water inlet flow distribution plate or play water flow distribution plate are connected.

By adopting the technical scheme, the directional transmission of vibration energy is realized by the composite structure of the anchor ear and the spring steel sheet frame, the spring steel sheet frame buffers high-frequency vibration impact through elastic deformation, stress concentration at the joint of the splitter plate and the pipeline is avoided, and meanwhile, the rigid connection of the anchor ear ensures consistency of vibration phases and maintains stability of resonance effect.

Optionally, the vibration pipeline extends along the direction of pressing close to the water purification tank inner wall in order to drive the interior rivers motion of water purification tank through the vibration of vibration pipeline.

Through adopting above-mentioned technical scheme, when vibrating conduit extends along jar internal wall, its vibration directly acts on jar internal water, forms the circulation vortex, prevents impurity deposit in the water purification jar, promotes jar internal water and the heat exchange of filtration membrane group simultaneously, avoids local high temperature to influence the membrane performance.

Optionally, the extending direction of the vibration pipeline in the water purifying tank is 冂.

Through adopting above-mentioned technical scheme, vibrating conduit is "冂" type extension overall arrangement in the water purification jar, utilizes the integrated configuration of its top horizontal segment and the perpendicular section in both sides, forms multi-direction vibration transmission path, and horizontal segment vibration directly disturbs jar body upper water, and perpendicular section vibration acts on jar body middle part and bottom rivers in step, forms three-dimensional circulation vortex, is showing the intraductal rivers disturbance intensity of promotion, thoroughly avoids the deposit of impurity in jar body corner or bottom.

Optionally, the input pipeline includes the steady voltage pipeline section that is located the water purification jar outside and is located the inboard input pipeline section of water purification jar, steady voltage pipeline section with vibrating pipeline links to each other, the input pipeline section with the membrane group water inlet side links to each other, be provided with voltage regulator on the steady voltage pipeline section.

Through adopting above-mentioned technical scheme, the steady voltage pipeline section is through external pressure stabilizing device regulation input rivers pressure, eliminates municipal pipeline pressure fluctuation's impact to the filtration membrane group of W, ensures that the membrane group operates under invariable pressure differential, improves filtration precision and membrane life-span.

Optionally, the back flushing device comprises a circulating flushing pipeline which is respectively connected with the water purifying tank and the first sewage draining pipeline, the circulating flushing pipeline is connected with a jet device, the jet device is connected with an ozone generator, the water inlet end of the vibration pipeline is connected with a second sewage draining pipeline, when the jet device is started, the mixture of bubbles and water flow scours the inner side of the plate type filter body, and the plate type filter body is driven to vibrate by the vibration pipeline in the scouring process.

By adopting the technical scheme, micro-nano bubbles and ozone are mixed in backwash water flow through the linkage design of the ejector and the ozone generator, cavitation effect generated during bubble collapse and ozone oxidation effect are cooperated to decompose organic pollutants on the surface of the membrane, and meanwhile, the vibrating pipeline continuously vibrates during backwash, so that the pollutant stripping effect is enhanced, and physical-chemical dual cleaning is realized.

Optionally, the circulating flushing pipeline is also connected with a pressure regulator, and the pressure regulator is arranged in parallel with the ejector.

By adopting the technical scheme, the pressure regulator and the jet device are connected in parallel, the mixing proportion of backwash pressure and ozone can be independently adjusted, the cleaning requirements of different pollution degrees are met, the energy consumption is reduced while the cleaning effect is ensured, and the damage of high-pressure flushing to the membrane structure is avoided.

Optionally, the vibration pipeline is a carbon fiber reinforced pipeline.

Through adopting above-mentioned technical scheme, carbon fiber reinforced pipeline possesses excellent corrosion resistance and antifatigue characteristic when keeping high strength, can bear high frequency vibration and rivers impact for a long time, reduces the pipeline risk of breaking, adapts to the long-term steady operation under the complex water quality environment.

In summary, the present application includes at least one of the following beneficial technical effects:

The combined structure of the spiral outer wall and the corrugated inner wall can generate high-frequency vibration when water flows through the water filtering membrane group before municipal water enters the water filtering membrane group, large particle clusters in the water are scattered into fine particles, the water flows enter the water filtering module group and are in a uniform dispersion state, the effective filtering area utilization rate is improved, and the stripping efficiency of impurities on the surface of the water filtering membrane is improved;

The sudden expansion and contraction cavity forms vortex disturbance at local part through the flow passage sudden change design with the diameter sudden expansion ratio of 1:1.5, further strengthens the water flow shearing force, promotes the falling off of impurities attached to the inner wall of the pipeline, and realizes the self-cleaning of the pipeline;

the linkage design of the ejector and the ozone generator ensures that micro-nano bubbles and ozone are mixed in the backwash water flow, cavitation effect and ozone oxidation effect generated when the bubbles collapse are cooperated to decompose organic pollutants on the surface of the membrane, and meanwhile, the vibration pipeline continuously vibrates during backwash to strengthen the pollutant stripping effect and realize physical-chemical double cleaning.

Drawings

Fig. 1 is a system diagram of the overall structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of an embodiment of the application primarily showing a vibrating conduit surge and surge chamber.

FIG. 3 is a schematic diagram of a structure of a W-type filtering membrane module connected to a vibrating pipeline according to an embodiment of the present application.

FIG. 4 is a schematic view of the direction of backwash water flow in the overall structure of an embodiment of the application.

Reference numerals illustrate:

1. municipal pipeline, 2, water purifying tank, 3, vibrating pipeline, 31, suddenly expanding and suddenly shrinking cavity, 4, input pipeline, 41, pressure stabilizing pipe section, 42, input pipe section, 43, pressure stabilizing device, 5, W-shaped filter membrane group, 51, plate type filter body, 52, membrane group water inlet side, 53, concentrated water outlet side, 54, purified water outlet side, 55, water inlet splitter plate, 56, water outlet splitter plate, 6, first sewage pipeline, 61, second sewage pipeline, 7, backwashing device, 71, circulating flushing pipeline, 72, jet device, 73, ozone generator, 74, pressure regulator, 8, resonance transmission structure, 81, anchor ear, 82, spring steel sheet frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4, where the described embodiments are only possible technical implementations of the present invention, and not all implementations are possible. Those skilled in the art can fully integrate the embodiments of the invention and obtain other embodiments without inventive faculty, and such embodiments are also within the scope of the invention.

The inventor of the present application has found that a major problem with conventional secondary water supply devices during use is that untreated municipal water is stored in the tank, which easily causes accumulation of impurities in the tank, requires periodic or irregular cleaning of the tank or the water collection filter system, increases maintenance costs, and requires shutdown during cleaning, thereby causing water shut-down. Therefore, the application mainly adopts the following scheme, and the aims of efficiently filtering the particulates and bacteria in the water are realized by introducing the design of the vibrating pipeline, the W-shaped filtering membrane group and the backwashing device, and meanwhile, the problem of long-time water interruption caused by cleaning requirements in the traditional technology is solved, and the effects of improving the water quality purifying efficiency and reducing the equipment maintenance time are achieved.

The intelligent secondary water supply drinking equipment provided by the embodiment of the application, referring to fig. 1, comprises a water purifying tank 2, a vibrating pipeline 3, an input pipeline 4, a W-shaped filtering membrane group 5, a first sewage draining pipeline 6 and a back flushing device 7, wherein the vibrating pipeline 3 is matched with the W-shaped filtering membrane group 5, suspended matters and soluble pollutants in water are removed through a physical disturbance and membrane separation combined means, and the back flushing device 7 can effectively recover the cleanliness of the system, and has a compact and reasonable integral structure and stable and reliable operation.

Wherein, vibration pipeline 3 sets up in water purification jar 2, and vibration pipeline 3's water inlet end links to each other with municipal pipeline 1, and vibration pipeline 3 extends in water purification jar 2 and its water outlet end extends water purification jar 2. Specifically, the vibration pipeline 3 consists of a spiral outer wall and a corrugated inner wall, the spiral outer wall guides water flow to rotate to form centrifugal force difference, so that the pipeline circumferentially vibrates, the corrugated inner wall induces axial vibration through periodical contraction-expansion (similar to Bernoulli effect) of the fluid, so that the vibration pipeline 3 is actively induced to vibrate, large particle clusters in water are scattered into fine particles, the water flow is in a uniform dispersion state when entering the W-shaped filtering membrane group 5, and the effective filtering area utilization rate of the W-shaped filtering membrane group 5 is improved. In addition, the vibration pipeline 3 pretreats the water flow, so that the particle ratio of more than 100 mu m can be reduced by 60 percent (compared with the vibration-free working condition).

Referring to fig. 2, in a preferred embodiment, the vibrating conduit 3 is provided with a sudden expansion and contraction cavity 31 having a diameter sudden expansion ratio of 1:1.5 at regular intervals. The sudden expansion and sudden contraction cavities 31 are arranged in the length direction of the whole pipeline according to the equidistant principle, and the distance between the central lines of two adjacent sudden expansion and sudden contraction cavities 31 is preferably 30 cm-50 cm. The diameter expansion ratio of the sudden expansion section is set to be 1.5 times of the original caliber, and the sudden contraction section returns to the original caliber to complete one complete cycle.

In a preferred embodiment, the material of the vibration tube 3 is selected from carbon fiber reinforced composite materials, and in other embodiments, the material of the vibration tube 3 may be selected from metal materials such as titanium alloy, which have both light weight and excellent corrosion resistance.

Referring to fig. 1, one end of an input pipe 4 is connected to a water outlet end of the vibration pipe 3, and the water outlet end of the input pipe 4 is connected to a water inlet end of the W-type filtering membrane group 5.

Referring to fig. 3,W, the filtering membrane set 5 includes a plate-type filtering body 51, a membrane set water inlet side 52 and a concentrate water outlet side 53 respectively provided at both sides of the plate-type filtering body 51, and a plate surface of the plate-type filtering body 51 is provided with a purified water outlet side 54. Optionally, the W-type filtering membrane group 5 may be a W-type alumina supporting silicon carbide ceramic membrane with a patent application number CN 2022108091855.

Specifically, the membrane group water inlet side 52 is connected with a water inlet splitter plate 55, the water inlet end of the water inlet splitter plate 55 is communicated with the water outlet end of the input pipeline 4, the concentrate water outlet side 53 is connected with a water outlet splitter plate 56, the water outlet end of the water outlet splitter plate 56 is communicated with the water inlet end of the first sewage pipeline 6, and a resonance transmission structure 8 is arranged between the water inlet splitter plate 55 and the water outlet splitter plate 56 and the vibration pipeline 3 respectively. The municipal water can be split to the positions of the plate-type filter body 51 through the water inlet splitter plate 55, filtered clean water is separated out from the surface of the clean water outlet side 54, and the sewage is converged to the first sewage drain pipeline 6 through the water outlet splitter plate 56 by the water at the positions of the plate-type filter body 51, so that the water flow is discharged and discharged.

In a preferred embodiment, the resonance transmission structure 8 comprises a hoop 81 and a spring steel sheet frame 82, the hoop 81 is connected with the vibration pipeline 3, the spring steel sheet frame 82 is respectively connected with the hoop 81 and the water inlet flow distribution plate 55 or the water outlet flow distribution plate 56, the spring steel sheet frame 82 is connected with the hoop 81 and the water inlet flow distribution plate 55 or the water outlet flow distribution plate 56 in a fan-shaped mode, the directional transmission of vibration energy is realized, and the spring steel sheet frame 82 buffers high-frequency vibration impact through elastic deformation, so that stress concentration at the connection part of the flow distribution plate and the pipeline is avoided.

In order to avoid the influence of vibrations on the inlet conduit 4 or the first sewage conduit 6, a flexible joint may be connected between the inlet conduit 4 and the inlet flow dividing plate 55 or between the first sewage conduit 6 and the outlet flow dividing plate 56.

Referring to fig. 1, in an embodiment, the vibration pipe 3 extends along a direction close to the inner wall of the water purifying tank 2 to drive the water flow in the water purifying tank 2 to move through the vibration of the vibration pipe 3, so that when water is replenished into the water purifying tank 2, the vibration directly acts on the water in the tank to form a circulating vortex, thereby preventing the deposition of impurities in the water purifying tank 2, and the water purifying tank is more energy-saving compared with the mode of circulating by a water pump in the prior art.

Preferably, the vibration pipeline 3 extends in the water purifying tank 2 in a '冂' direction. The arrangement utilizes the combined structure of the horizontal section at the top and the vertical sections at the two sides to form a multidirectional vibration transmission path, the vibration of the horizontal section directly disturbs the upper water body of the water purifying tank 2, the vibration of the vertical section synchronously acts on the water flow at the middle part and the bottom of the water purifying tank 2 to form a three-dimensional circulating vortex, the disturbance intensity of the water flow in the water purifying tank 2 is obviously improved, and the deposition of impurities at the corners or the bottom of the water purifying tank 2 is thoroughly avoided.

Referring to fig. 1 and 3, in another preferred embodiment, the input pipe 4 includes a pressure stabilizing pipe section 41 located outside the water purifying tank 2 and an input pipe section 42 located inside the water purifying tank 2, the pressure stabilizing pipe section 41 is connected to the vibration pipe 3, the input pipe section 42 is connected to the water inlet side 52 of the membrane module, and a pressure stabilizing device 43 is provided on the pressure stabilizing pipe section 41. Optionally, the pressure stabilizing device 43 can be a pressure reducing valve or a pressure stabilizing tank, and the pressure of the input water flow is regulated through the external pressure stabilizing device 43, so that the impact of pressure fluctuation of the municipal pipeline 1 on the W-shaped filtering membrane group 5 is reduced, the membrane group is ensured to operate under constant pressure difference, and the filtering precision and the membrane service life are improved.

Referring to fig. 4, fig. 4 is a back flushing water flow direction diagram, in this embodiment, the back flushing device 7 includes a circulation flushing pipe 71, the circulation flushing pipe 71 is respectively connected with the water purifying tank 2 and the first sewage pipe 6, the circulation flushing pipe 71 is connected with a jet device 72, the jet device 72 is connected with an ozone generator 73, the water inlet end of the vibration pipe 3 is connected with the second sewage pipe 61, when the jet device 72 is started, the mixture of air bubbles and water flow flushes the inner side of the plate type filter body 51, and the plate type filter body 51 is driven to vibrate by the vibration pipe 3 in the flushing process, so as to realize physical-chemical double cleaning. The optimal inclination angle is obtained by precisely calculating the outlet angle of the nozzle of the ejector 72, so that the generated high-speed bubble column furthest catches surrounding liquid to participate in the mixing reaction, and the ozone generator 73 generates active gas molecules which are dispersed along with the bubble group to fully exert the sterilizing effect.

Further, a pressure regulator 74 is further connected to the circulation flushing pipe 71, and the pressure regulator 74 is connected in parallel with the ejector 72. The added pressure regulator 74 is used for dynamically regulating the total flow, flexibly switching the high and low gear options according to actual requirements, and achieving the dual purposes of energy saving, consumption reduction and strengthening treatment. The specific operation flow is that firstly, the ejector 72 is started to generate water flow with certain pressure, then the ozone generator 73 is started to enable ozone bubbles to enter the water flow, then the proper flow is regulated according to the needs through the pressure regulator 74, and finally, the formed mixture flows through the area to be treated, so that the efficient cleaning and sterilizing effects are achieved.

The backwashed mixture flows through the W-shaped filtering membrane group 5 and the vibrating pipeline 3, the mixture flushes the inner sides of the W-shaped filtering membrane group 5 and the vibrating pipeline 3, and the flushed dirt is finally discharged from the second sewage draining pipeline 61. In order to realize the corresponding filtering function and the back flushing function, the pipeline is provided with a corresponding valve, a water pump and the like so as to realize the reversing of water flow, and the technology is more conventional and is not repeated herein.

The implementation principle of the embodiment is that the unique morphological characteristics of the vibrating pipeline 3 cause the collision friction of internal liquid particles to release potential energy to damage the stability of flocculation agglomerates, then the pure products are obtained through the precise classified screening of the W-shaped filtering membrane group 5, and finally accumulated residues are removed regularly by the scientifically configured backwashing device 7 to maintain the healthy running state of the system. The whole process has extremely high automation degree without human intervention, and fundamentally eliminates the inconvenience caused by timing fixed-point shutdown maintenance in the traditional mode.

The present embodiment focuses on optimizing the above preferred embodiments of the present application, and does not limit the scope of the present application, so that all equivalent changes according to the structure, shape and principle of the present application should be covered in the scope of the present application.

Claims

1. An intelligent secondary water supply drinking device, characterized by comprising:

A water purifying tank (2);

the vibrating pipeline (3) is arranged in the water purifying tank (2), the water inlet end of the vibrating pipeline (3) is connected with the municipal pipeline (1), the vibrating pipeline (3) mainly comprises a spiral outer wall and a corrugated inner wall, the vibrating pipeline (3) extends in the water purifying tank (2) and the water outlet end of the vibrating pipeline extends out of the water purifying tank (2),

An input pipeline (4) connected with the water outlet end of the vibration pipeline (3);

The W-shaped filtering membrane group (5) comprises a plate-shaped filtering body (51), and a membrane group water inlet side (52) and a concentrated water outlet side (53) which are respectively arranged on two sides of the plate-shaped filtering body (51), wherein a purified water outlet side (54) is arranged on the plate surface of the plate-shaped filtering body (51), the water outlet end of the input pipeline (4) is connected with the membrane group water inlet side (52), and the W-shaped filtering membrane group (5) is arranged on the outer wall of the vibrating pipeline (3);

a first sewage drain pipe (6) connected with the concentrated water outlet side (53);

the back flush device (7) is connected with the water purification tank (2) and the first sewage draining pipeline (6), and the back flush device (7) is used for reversely introducing water to the W-shaped filtering membrane group (5) and the vibrating pipeline (3) so as to clean the W-shaped filtering membrane group (5) and the vibrating pipeline (3).

2. The intelligent secondary water supply and drinking device according to claim 1, wherein the vibration pipeline (3) is provided with sudden expansion and contraction cavities (31) at intervals of a preset distance, and the diameter sudden expansion ratio is 1:1.5.

3. The intelligent secondary water supply and drinking device according to claim 1, wherein the water inlet side (52) of the membrane group is connected with a water inlet splitter plate (55), the water inlet end of the water inlet splitter plate (55) is communicated with the water outlet end of the input pipeline (4), the concentrated water outlet side (53) is connected with a water outlet splitter plate (56), the water outlet end of the water outlet splitter plate (56) is communicated with the water inlet end of the first sewage draining pipeline (6), and resonance transmission structures (8) are arranged between the water inlet splitter plate (55) and the water outlet splitter plate (56) and the vibration pipeline (3) respectively.

4. An intelligent secondary water supply and drinking device according to claim 3, wherein the resonance transmission structure (8) comprises a hoop (81) and a spring steel sheet frame (82), the hoop (81) is connected with the vibration pipeline (3), and the spring steel sheet frame (82) is connected with the hoop (81) and a water inlet flow distribution plate (55) or a water outlet flow distribution plate (56) respectively.

5. The intelligent secondary water supply and drinking equipment according to claim 1, wherein the vibration pipeline (3) extends along the direction close to the inner wall of the water purifying tank (2) so as to drive the water flow in the water purifying tank (2) to move through the vibration of the vibration pipeline (3).

6. The intelligent secondary water supply and drinking equipment according to claim 5, wherein the extending direction of the vibrating pipeline (3) in the water purifying tank (2) is 冂.

7. The intelligent secondary water supply drinking device according to claim 1, wherein the input pipeline (4) comprises a pressure stabilizing pipe section (41) positioned at the outer side of the water purifying tank (2) and an input pipe section (42) positioned at the inner side of the water purifying tank (2), the pressure stabilizing pipe section (41) is connected with the vibrating pipeline (3), the input pipe section (42) is connected with the water inlet side (52) of the membrane group, and a pressure stabilizing device (43) is arranged on the pressure stabilizing pipe section (41).

8. The intelligent secondary water supply drinking device according to claim 1, wherein the back flushing device (7) comprises a circulating flushing pipeline (71), the circulating flushing pipeline (71) is respectively connected with the water purifying tank (2) and the first sewage draining pipeline (6), the circulating flushing pipeline (71) is connected with a jet device (72), the jet device (72) is connected with an ozone generator (73), the water inlet end of the vibrating pipeline (3) is connected with a second sewage draining pipeline (61), and when the jet device (72) is started, a mixture of bubbles and water flow flushes the inner side of the plate-type filter body (51) and drives the plate-type filter body (51) to vibrate by utilizing the vibrating pipeline (3) in the flushing process.

9. The intelligent secondary water supply and drinking device according to claim 8, wherein the circulating flushing pipeline (71) is further connected with a pressure regulator (74), and the pressure regulator (74) is arranged in parallel with the ejector (72).

10. The intelligent secondary water supply and drinking equipment according to claim 1, wherein the vibration pipeline (3) is a carbon fiber reinforced pipeline.